Question

2sin²30° -3cos²45° + tan²60° +3sin²90°=​

Answer 1

Answer:

3

Step by Explanation

We Know that

Sin 30 : 1/2

Cos 45 : 1/√2

Tan 60 : 1

Sin 90 : 1

Now,

2×(1/2)^2-3×(1/√2)^2+(1)^2+3×(1)^2

2×1/4-3×1/2+1+3 = 1/2-3/2+4 = -1+4=3

SO,

FINAL ANSWER IS "3".